AC magnetisation measurements and scanning electron microscopy data obtained by four different means of synthesis of YBa2Cu 3O7/Ag composites show that the percolation threshold of silver metal is crucially dependent on the method of preparation. When the sintering is performed under conditions close to the eutectic melt formation, the percolation threshold of silver is shifted to lower values. At 20 wt% Ag addition and above, the silver layer precipitates at grain boundaries and fully interrupts the intergranular superconducting links